Leakageproof spring-secured safety valve



Oct. 16, 1928.

1,687,554 E. GANsFRlED f LEAKAGEPROOF SPRING SECURED SAFETY VALVE FiledMay 17, 1926 cfg . nageufoz, @me Wm.; 33511316 Stimm Patented ct. 16,1928.

- UNITE-D STATES EUGENE enivsrninn, or NEW BRUNSWICK, NEW nasi-far.

l LEAAGEPROOF SPRING-SECURED SAFETY VALVE.

Appiicatin mea may 17,1926'. seriai Nq. 109,630.l

, This invention relates to improvements lin' gas fixtures, moreparticularly to gascocks or valves wherein leakage is precluded, and isan improvement on the'spring secured safety valve shown and described inan application filed by me Dec. 17, 1925, Ser. No. 713,900, patentcdJlune 1, 1926, No. 1,587 ,296.

n the construction ofthe valve shownin the above identified application,leakage 'may occur around vthe straight valve stem 15 there beingno'sealing or binding relation between the said stem and its enclosingsleeve 13, and further, two cross pins are required, one each at thetopk and bottom, of the structure.

The 'object of the present invention is.to provide a constructionwhereby leakage possibility is eliminated and positive sealinga'ctioniachieved. u l

A feature of theinvention resides in a valve of the above describedclass comprising a ixedcasing having a tapered bore to receive acorrespondingly tapered plug, said casing and plug being slotted'at thetop to receive a pin carried on a depressible stem having a 25' handlet-o operate said plug and ineans at the bottom of the valve formaintaining the said 4 plug in sealed relation with its casing. y

The 'construction is such that should the valve operating handle or pinbreak, or become displaced, the valve will remain in the closedsealedposition, which enhances lthe safety feature of the device.

En the drawings f p Fig. 1 is a sectional elevation of my`improvedsafety valve with the parts in the closed position. 4

Fig. 2 is a partially sectional elevation of the valve with the partsturned to the open position to admit gas through the .pipe line. Fig.3'is a horizontal ysectional plan view taken on the line 3-3 of Fig. 1.

Fig. 4 is al fragmentaryV sectional elevation on the line 4 4 of Fig. 1.Referring to the drawings, the valve casple 11 and v12, respectively, tovwhich are threaded sections of the line pipe 13, or couplingsforconnecting the valve to a gas de vice, like'a gas range or stove.

` The casing also has a central tapered bore 14 andoppositely arrangedslots 15 at the top, which top portion is threaded, as shown. The slots-15 are vertically arranged and coinmuncate with an interiorvcircumferential groove 416, which is interrupted 'by a shoulder andformed integral with a handle 29, and a ing 10 is formed with an inletand outlet nip vstein'beingsecured in an axial bore in the 17, toliinit'the turning movement orthol valve to the open position.

Within the casing is a valve plug 18, counterbored at the top 'at 19,and provided with a cross'port 20, and areduced stem 21, around which aspring 22 is coiled and confinedbetween washers -23 and 24, said springand washers being secured by anut or collar 25, threaded on or pinned tosaid stem 21.

The valve plug- 18 has oppositely arranged vertical slots 26, coincidingwith the slots 15, toreceive a cross pin 27, on a depressible stem. 428,slid'ably received in the counterbore 19,

hood. 30 spaced from the stem to'provide a 'I0 pocket 31, -to receive acompressed spring 32, normally acting to urge the stem 28 upwardly tohold the pin 27 against a cap 33, threaded on the valve casing. This caphasv a central bore for the stem 28, and a tubular boss 34, on which thespring 32 rests. y

'.When it is desired to turn the valve plug 18 from the closed positionof Fig. 1 tothe open position of Fig. 2, itis onlynecessary` to depressthehandle'29 with its stem 28, 111itil the cross pin 27 strikes thebottoms of the slots 26 in the valve plug, at which position ..ne endsof the cross pin will be opposite the vcircumferential groove 16, whenthe pin will be free'to pass around .in said groove, as the handle 29isturned to open the service line.

Normally whenthe pin 27 is up against the cap .33, it ranges through theslots 26 and into i the slots 15 of the casing, thereby locking thevalve plug against rotary movement, as will be understood.

Changes and variations may be made in the details of construction of myinvention. within the spirit of the same and the scope of the appendedclaims. Y

What I claim as new, is

1. In a safety valve having a body with openings to a service line, arotatable plug in the body with a transverse bore therein adapted tocommunicate with said openings in the body and vmeans to permit therotation of said plug but to keep the same in fixed'rel- .ative positionlaterally to the service line;

a slidable steinwith a handle thereon said plug, a cross pin throughsaid stem slidable therewith in a slot in said plug and adapted to berotated in a groove in the body when inregistering relation therewith,said slgroove having two diametricallyopposed o a. inn

, the body communicating therewith and adaptedto receive the ends ofsaid pin, their position being such that the transverse bore in the'plug will be out of alignment with the openings in the body when thepin is in said slots in the body; a resilient element interposed betweena shoulder on said stem and the body of the valve to normally move saidpins into said slots in the body and prevent the rotation of the plug. yl

2. In a safet valve as set forth in claim La stop in sai circular groovein the body to limit the rotation of the plug when its transverse boreis in alignmentwith the service openings.

3. In a safety valve as set forth in claim 1,' means tor securing saidplug in said body, said means including a cap threaded on theL body'andengaging the plug, and: said resilient elementbeing placed between saidshoulder onthe'stem and said cap. 4. In a safety valve as -set forth inclaim l l, means for securing said plug in said body, `said meansincludinga cap threaded on the i body and engaging the plug; a spacedapart i A.sleeve concentric and integral with said stem fandslidable ona portion of said cap, said resilient element being in the form ofa-heli- 'calfspringplacedbetween said shouldervl'on #i tlestem and'saidcap, withimsa'id sleeve. Y; 5. In asafety valve having Va body with'penings to a service line and a'rotatable plug herein with a transversebore adapted to 'a egister with saidopening'sa slidable l'axial v y-stellari in said plug with` a cross pin operating in slots inl saidplug permitting the sliding of the stem relative to the plug, butpermanently connectingsaid stem and said plug for rotary motion; saidbody having va circular groove for receiving the ends Yof said cross into'permit the rotation of the plug into and out of registering relationwith the service openings, said body also having two longitudinalslotsin communication with said `groove adapted to receive said pins whensaid plug is out otregistering relation with said openings; a cap on thebody securing said plug therein, and a resilient element interposedbetween a portion of the stem and said cap'. 6. In a safety valve of theclass described, having an axial stem with across pin slidable in saidplug, anda circular groove in the body to permit,.and longitudinal slotscommunicating with said groove to prevent a ca Ythreaded on the body tofix the -position of t 1e plug a sleeve secured to a shoulder Aon saidstem, spaced apart fromb and consaid cylindrical extension.

' Signed atNew York, in the county Newl York, and State of New York,this 5th day ofMay, A. vD. 1926.`

EUGENE GANSEEIEDQ the rotation of the cross pins and the plug;

